Store application context to avoid activity leak.

Bug 3285156

Change-Id: I579cf628d178cabf999fc7cd63765298d2082944

src/com/android/email/ResourceHelper.java

@@ -32,7 +32,7 @@ public class ResourceHelper {
     private final Paint[] mAccountColorPaints;
 
     private ResourceHelper(Context context) {
-        mContext = context;
+        mContext = context.getApplicationContext();
         mResources = mContext.getResources();
 
         mAccountColors = mResources.getIntArray(R.array.combined_view_account_colors);